Toyota MIRAI 2021 Owner's Manual page 83

Ease of accumu-
lation
Detectability
■ Basic concepts of hydrogen
safety
● Prevent leakage
The pipe joints of the hydrogen
pipelines are designed to prevent
leaks.
The joints are checked for gas leak-
age at every official vehicle inspec-
tion.
● Detect to stop leakage
• The vehicle is equipped with
hydrogen detectors. If the hydro-
gen detectors detect a leak, the
hydrogen tank valves automati-
cally close to prevent more hydro-
gen from escaping.
• The vehicle is equipped with a col-
lision sensor. If the collision sen-
sor detects a collision, the
hydrogen tank valves automati-
cally close to prevent hydrogen
gas from leaking from any dam-
MIRAI Owners Manual_USA_M62034_en
Hydrogen gas
Petroleum Gas)
 Disperses
upward and is
 Spreads on the
diluted to safe
ground or floor
concentrations
 Does not
in open air
adhere to cloth-
 Does not
ing
adhere to cloth-
ing
 Due to its color-
less and odor-
less state,
difficult to
detect by sight
 Detectable by
or smell
odor and gas
 Vehicle hydro-
leaking noise
gen detectors
will display a
warning on the
multi-informa-
tion display
●
The hydrogen tanks and pipelines
are located outside of the passenger
compartment, so any leaked gas will
disperse into the atmosphere by
design.
●
No source of fire is located near the
hydrogen pipelines by design.
■
●
2-1. Fuel cell vehicle
LPG (Liquid
Gasoline
 Spreads on the
ground or floor
 Adheres to
clothing
 Detectable by
color and odor
aged components.
Disperse the leaked hydrogen gas
Eliminate sources of fire
WARNING
Hydrogen-related compo-
nents
Never alter, customize, or disas-
semble any hydrogen-related
parts.
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